From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3D388C46467 for ; Mon, 16 Jan 2023 16:15:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=/pH9toAkAGzbXo/KPdvuRQDnjyPfH0IY3tjK8GvQ+aE=; b=Jir6CtwG6IA/V0 QPAYMpRasXIYcee3HoD3i4AvxCOvIGt5zh0B8oixOzlgmWLZtfR60vMApFzqo5YUbkvlSsHcTRLl/ mETWaLNWH69RSWJLwSvQsU4ds27ajIcRuPy6VPnY+eIIfFl3kD7j+ByzC3c2y+PzC1SMDYQca/zl3 l6Kys0JcdSITlATWHQVL1Cs5hmW18y4wFx2TqlrnTGG1Ky9yLDmtIClOjEj095Q3RNFobJ7Po2eQ1 2FQVnGjs4OIQ4IurIR+1ZWmAFPVxr7lUMtN5SRU7rg/Ehf7/TaIi/qKUiLYv8CmB3KTZuComJbM6C 3UTjOPzvViicN8Ctw34g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHS7o-00BGYV-EG; Mon, 16 Jan 2023 16:14:20 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHS1J-00BDDJ-5R for linux-arm-kernel@lists.infradead.org; Mon, 16 Jan 2023 16:07:38 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A5C2B61042; Mon, 16 Jan 2023 16:07:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34275C4339C; Mon, 16 Jan 2023 16:07:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673885256; bh=MPucUh5nMM1iQ9zAE7rDc23uTz6TPGd3yaLu/ElA83s=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=iuOyXvjIV7xA5YHyOtZzbazrfBaesm1aSLxmOLv+7UEcDHQqVkztJvkvlVWg/aiwz umNBYV3RfSQvHR24d5GtwqZUTswgEYivz1k6Mk+GQtfAVSkEMvv2arKs2gBzL90lQb owTWqSLvpxC3I5gUNRKgrnTnroEUSi9o11+TJFdwomnad5wZb5gBDHGIrGr/N5cKFu cl8Jv/5jSwRbEtzL8Ju26OZYPsqXPzgrnhmqP1cP2+Qu3KVnAsMbbZSxIW/s5CWEb/ 0Teb+VYZOrNE79mRNpVvNjAhnIA9jg9tKkokZVNq7FK6FIkWNmkoKdNQdBMDJziJ8Y gtEWdUgL8KTEw== From: Mark Brown Date: Mon, 16 Jan 2023 16:04:52 +0000 Subject: [PATCH v4 17/21] kselftest/arm64: Teach the generic signal context validation about ZT MIME-Version: 1.0 Message-Id: <20221208-arm64-sme2-v4-17-f2fa0aef982f@kernel.org> References: <20221208-arm64-sme2-v4-0-f2fa0aef982f@kernel.org> In-Reply-To: <20221208-arm64-sme2-v4-0-f2fa0aef982f@kernel.org> To: Catalin Marinas , Will Deacon , Oleg Nesterov , Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Shuah Khan Cc: Alan Hayward , Luis Machado , Szabolcs Nagy , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org, Mark Brown X-Mailer: b4 0.12-dev-77e06 X-Developer-Signature: v=1; a=openpgp-sha256; l=3173; i=broonie@kernel.org; h=from:subject:message-id; bh=MPucUh5nMM1iQ9zAE7rDc23uTz6TPGd3yaLu/ElA83s=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBjxXWuq2xm82pLoA5y4Nkh8zSmq241XVVBVuB49Z3T Kn55b76JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCY8V1rgAKCRAk1otyXVSH0H+4B/ 0TJKtvtGUngMnoljDrMhE54f7qgIHgtQFbRCW5MHO4mNhVzojOEDeZBSMgZ/gM1lINqpSeQBzJLuuO rz6jBjT0mqTKWTOcYIcmfQRER45aGIW8Br9+gOkLkCX7KCziXkbynS5FcuneqG7Y2ZXF++6nUxbKjQ I0Dh5p46O70Q+sr25BfinhqPgae7lNldZ14JVIQns75nV9E1YQ2n61evx96nTtMTtX4cYchXyxLRMa bTgVCEc0sAM47krNzmUJWCxvL00v/cMixnIzJAIDtjgveWKogEJT/DYlsEiIXUG8FvbPsfcg2Xe322 fUE4/oIev2uAhlJ4MArQTIjR8sqPpl X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230116_080737_337644_B6BB705B X-CRM114-Status: GOOD ( 15.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add ZT to the set of signal contexts that the shared code understands and validates the form of. Signed-off-by: Mark Brown --- .../selftests/arm64/signal/testcases/testcases.c | 36 ++++++++++++++++++++++ .../selftests/arm64/signal/testcases/testcases.h | 1 + 2 files changed, 37 insertions(+) diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c index d2eda7b5de26..27d495fa52f8 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.c +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c @@ -108,6 +108,26 @@ bool validate_za_context(struct za_context *za, char **err) return true; } +bool validate_zt_context(struct zt_context *zt, char **err) +{ + if (!zt || !err) + return false; + + /* If the context is present there should be at least one register */ + if (zt->nregs == 0) { + *err = "no registers"; + return false; + } + + /* Size should agree with the number of registers */ + if (zt->head.size != ZT_SIG_CONTEXT_SIZE(zt->nregs)) { + *err = "register count does not match size"; + return false; + } + + return true; +} + bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) { bool terminated = false; @@ -117,6 +137,7 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) struct extra_context *extra = NULL; struct sve_context *sve = NULL; struct za_context *za = NULL; + struct zt_context *zt = NULL; struct _aarch64_ctx *head = (struct _aarch64_ctx *)uc->uc_mcontext.__reserved; void *extra_data = NULL; @@ -177,6 +198,13 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) za = (struct za_context *)head; new_flags |= ZA_CTX; break; + case ZT_MAGIC: + if (flags & ZT_CTX) + *err = "Multiple ZT_MAGIC"; + /* Size is validated in validate_za_context() */ + zt = (struct zt_context *)head; + new_flags |= ZT_CTX; + break; case EXTRA_MAGIC: if (flags & EXTRA_CTX) *err = "Multiple EXTRA_MAGIC"; @@ -234,6 +262,9 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) if (new_flags & ZA_CTX) if (!validate_za_context(za, err)) return false; + if (new_flags & ZT_CTX) + if (!validate_zt_context(zt, err)) + return false; flags |= new_flags; @@ -245,6 +276,11 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) return false; } + if (terminated && (flags & ZT_CTX) && !(flags & ZA_CTX)) { + *err = "ZT context but no ZA context"; + return false; + } + return true; } diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.h b/tools/testing/selftests/arm64/signal/testcases/testcases.h index 040afded0b76..a08ab0d6207a 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.h +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.h @@ -18,6 +18,7 @@ #define SVE_CTX (1 << 1) #define ZA_CTX (1 << 2) #define EXTRA_CTX (1 << 3) +#define ZT_CTX (1 << 4) #define KSFT_BAD_MAGIC 0xdeadbeef -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel